a Sails application

In this example I show you how to send a QR code via HTTP request in two simple steps:

1. Add a route to the controller you want to use like

  'GET /qr': 'QrController.index',
  'GET /qr2': 'QrController.showqr'

2. Require the Node module in the controller, in this case qr-image

  var qr = require('qr-image');

Also you can retreive the data you want to embed in the QR code by the parameters in the request like:

  var text = req.param('data_to_embed');

  var img = qr.image(text);
  res.writeHead(200, {'Content-Type': 'image/png'});
  img.pipe(res);

Just fork or download the repository and enter the folder using cd qr_example and run the following command to install all the dependencies:

  npm install

Then run the following command to execute the Sails project:

  sails lift

Go to http://localhost:1337/qr or http://localhost:1337/qr2 to see the code rendering on the browser or using Postman it will work too.

I hope it could be useful, Follow me on Twitter @Lexynux!